Torsion nut and bolt with pushing structure and use method of torsion nut and bolt

Abstract

The invention discloses a torque nut with a pushing structure and a using method thereof.The torque nut with the pushing structure comprises a nut body, a split pushing component and a first pressure-bearing gasket, a first internal thread is arranged in the nut body, and a plurality of first mounting holes are formed in the outer wall of the nut body; the axial direction of the first mounting hole is consistent with that of the nut body, the split pushing part is mounted in the first mounting hole, and the bottom of the split pushing part extends out of the first mounting hole to abut against the first pressure-bearing gasket; the split pushing part comprises a torsion bolt and a pressure-bearing column, the pressure-bearing column is arranged in the first mounting hole, the torsion bolt is meshed with threads in the first mounting hole, and the torsion bolt extrudes the pressure-bearing column towards the first pressure-bearing gasket; the torsion nut with the pushing structure, the bolt and the using method of the torsion nut are simple in structure, reliable in connection, excellent in looseness prevention and capable of preventing the torsion bolt from being damaged.

Description

Technical Field

[0001] The present invention relates to the technical field of fasteners, and more particularly to a torque nut and bolt with a pushing structure and their usage methods. Background Art

[0002] Fasteners have been widely used in structures such as connection, compression, and transmission of mechanical equipment. Torque nuts and bolts with a pushing structure have outstanding application effects under some working conditions with relatively strict requirements for anti-loosening, impact, heavy loads, etc., and the operation is relatively simple. By tightening several pushing screws around the super nut with a smaller tightening torque, a large and precise axial pushing force can be generated. The characteristics of torque nuts and bolts are that the tightening force on the large-size main thread is distributed to multiple small-size pushing bolts. Because the size of the pushing bolts is small, a small and ordinary torque wrench can be used to achieve the required pre-tightening force. Therefore, not only can a large amount of resource waste and safety risks caused by the handling and use of large, heavy, complex, and electrified tools be avoided, but also large-size bolt connections can be tightened more simply and quickly.

[0003] In the prior art: the pushing structure uses several pushing bolts to directly act, and the pre-tightening force directly generated on the pushing bolts during use causes harmful distortion or bending damage to the threads of the pushing bolts; further, when the mechanical equipment vibrates and shakes during operation, especially when the vibration force perpendicular to the axial direction of the nut is generated, the main nut may become loose, causing risks. Summary of the Invention

[0004] In order to solve the above problems, the purpose of the present invention is to provide a torque nut and bolt with a pushing structure and their usage methods, which have a simple structure, reliable connection, excellent anti-loosening performance, and avoid damage to the torque bolts.

[0005] According to one aspect of the present invention, there is provided a torque nut with a pushing structure, including: a nut body, a split pushing component, and a first bearing gasket. A first internal thread is provided inside the nut body, and several first mounting holes are provided on the outer wall of the nut body. The axial direction of the first mounting holes is consistent with the axial direction of the nut body. The split pushing component is installed in the first mounting holes, and the bottom of the split pushing component extends out of the first mounting holes to abut against the first bearing gasket; The split pushing component includes: a torque bolt and a bearing column. The bearing column is arranged in the first mounting hole, and the torque bolt meshes with the thread in the first mounting hole. The torque bolt squeezes the bearing column towards the direction of the first bearing gasket. By improving the structure of the existing single pushing bolt into a structure of a torque bolt and a bearing column, the generated pre-tightening force is a pure linear tensile force, thus avoiding the harmful distortion or bending damage caused by the tightening of ordinary threads.

[0006] In some embodiments, a first limiting protrusion is provided at the bottom of the first mounting hole. The first limiting protrusion limits the further downward movement of the pressure-bearing column, and a second internal thread is provided on the inner wall of the first mounting hole. The moving distance of the pressure-bearing column is limited by the first limiting protrusion.

[0007] In some embodiments, a second limiting protrusion is provided at the top of the pressure-bearing column. The outer diameter of the second limiting protrusion is smaller than the inner diameter of the second internal thread, and the outer diameter of the second limiting protrusion is larger than the inner diameter of the first limiting protrusion. Such a setting can not only ensure that the pressure-bearing column is installed into the first mounting hole but also ensure that the moving position is limited by the first limiting protrusion.

[0008] In some embodiments, a loosening prevention component is provided between the torque bolt and the nut body; The loosening prevention component includes: a loosening prevention card and a snap ring. The loosening prevention card is engaged with the top of the torque bolt, and the snap ring limits the loosening prevention card at the top of the torque bolt. The loosening of the torque bolt and thus the loosening of the nut body are further prevented by the loosening prevention card and the snap ring.

[0009] In some embodiments, the axial height of the torque bolt is at least 0.1 times the axial height of the pressure-bearing column. Ensuring the length of the torque bolt facilitates better force application of the torque bolt.

[0010] In some embodiments, a threaded hole is provided at the center of the shaft engaged with the nut body. A first fixing piece is provided at the top of the torque bolt. The first fixing piece is pressed against the top of the torque bolt. The first fixing piece is connected to the shaft through a first fixing bolt to press the first fixing piece against the top of the bolt body. By pressing the top of the torque bolt with the first fixing piece, the loosening of the torque bolt due to vibration is further prevented, and the fastening effect is more reliable.

[0011] In some embodiments, a first sealing component is provided at the top of the first fixing piece. The first sealing component includes: a first shield, a first anti-loosening gasket, a second anti-loosening gasket, a first sealing ring, a second sealing ring, a first grease filling port, and a third fixing bolt. The third fixing bolt passes through the first shield and is connected to the top of the first fixing bolt and presses the first shield against the top of the first fixing bolt. A first sealing ring is provided between the third fixing bolt and the first shield. A first anti-loosening gasket is provided between the third fixing bolt and the first shield, and the first anti-loosening gasket is pressed against the top of the first sealing ring. A second anti-loosening gasket is provided between the first fixing bolt and the first fixing piece. A second sealing ring is provided between the outer side of the bottom of the first pressure-bearing gasket and the inner side of the first shield. The first shield and the first pressure-bearing gasket form a sealed space. At least one first grease filling port is provided on the surface of the first shield, and the first grease filling port is communicated with the sealed space; Alternatively, the first sealing component is a first elastic shield that wraps around the outer walls of the first fixing bolt, the nut body, and the first pressure-bearing gasket. The provision of the first sealing component provides better sealing protection in a working environment with acidity or alkalinity, preventing the internal components from being rusted.

[0012] According to one aspect of the present invention, a method for using a torque nut with a pushing structure includes the following steps: S1. Pre-assemble the split pushing component. Insert the pressure-bearing column into the first mounting hole, engage the torque bolt with the thread in the first mounting hole. At the same time, the pressure-bearing column has free up-and-down movement space in the first mounting hole. S2. Connect all the split pushing components to the first mounting hole according to the steps of S1. S3. Install the first pressure-bearing gasket. Set the first pressure-bearing gasket on the top of the bolt passing through the connected component. S4. Screw in the nut body, engage the nut body with the thread at the top of the bolt. There is a gap between the nut body and the first pressure-bearing gasket. S5. Apply a pre-tightening force to the torque bolt in sequence according to the preset torque value according to the installation instruction card. The torque bolt rotates and moves downward while driving the pressure-bearing column to move linearly, and the pressure-bearing column abuts against the first pressure-bearing gasket. S6. Install the anti-loosening card. Slightly adjust the angle of the torque bolt, and snap the anti-loosening card onto the tops of all the torque bolts. S7. Install the circlip. Use a circlip pliers to press the circlip into the installation groove at the top of the torque bolt in sequence. S8. Set the second anti-loosening gasket on the first fixing bolt, place the first fixing piece on the top of the torque bolt. The first fixing bolt passes through the first fixing piece and is fixedly connected to the threaded hole at the top of the bolt. S9. Install the first sealing component; The step S9 is: directly wrap the first elastic shield around the outer walls of the first fixing bolt, the nut body, and the first pressure-bearing gasket; Alternatively, the step S9 is: successively put the first anti-loosening gasket and the first sealing ring on the third fixing bolt, press the second sealing ring onto the bottom inner wall of the first shield, install the first shield outside the first fixing bolt, the nut body, and the first pressure-bearing gasket, confirm that the second sealing ring is installed in place, the third fixing bolt passes through the first shield and is threadedly connected to the top of the first fixing bolt, tighten the third fixing bolt while the first anti-loosening gasket and the first sealing ring are installed in place, and inject grease from the first grease filling port.

[0013] According to one aspect of the present invention, a torsion bolt with a pushing structure includes: a bolt body, a split pushing component, and a second bearing gasket. An external thread is provided below the bolt body, and a plurality of second mounting holes are provided above the bolt body. The axial direction of the second mounting holes is consistent with the axial direction of the bolt body. The split pushing component is installed in the second mounting holes, and the bottom of the split pushing component extends out of the second mounting holes to abut against the second bearing gasket; The split pushing component includes: a torsion bolt and a bearing column. The bearing column is arranged in the second mounting hole. The torsion bolt is engaged with the internal thread in the second mounting hole, and the torsion bolt squeezes the bearing column towards the direction of the second bearing gasket. By improving the separate pushing bolt in the prior art into the structure of a torsion bolt and a bearing column, the generated pre-tightening force is a pure linear tensile force, thus avoiding the damage caused by harmful twisting or bending generated by tightening ordinary threads.

[0014] In some embodiments, a third limiting protrusion is provided at the bottom of the second mounting hole. The third limiting protrusion limits the bearing column from moving downward continuously, and the inner wall of the second mounting hole is provided with a third internal thread. The moving distance of the bearing column is limited by the third limiting protrusion.

[0015] In some embodiments, a second limiting protrusion is provided at the top of the bearing column. The outer diameter of the second limiting protrusion is smaller than the inner diameter of the third internal thread, and the outer diameter of the second limiting protrusion is larger than the inner diameter of the third limiting protrusion. Such a setting can not only ensure that the bearing column is installed into the second mounting hole but also ensure that the moving position of the bearing column is limited by the third limiting protrusion.

[0016] In some embodiments, a loosening prevention component is provided between the torsion bolt and the bolt body; The loosening prevention component includes: a loosening prevention card and a snap ring. The loosening prevention card is clamped on the top of the torsion bolt, and the snap ring limits the loosening prevention card on the top of the torsion bolt; The loosening of the torsion bolt and further the loosening of the bolt body are further prevented by the loosening prevention card and the snap ring.

[0017] The axial height of the torsion bolt is at least 0.1 times the axial height of the bearing column. Ensuring the length of the torsion bolt is convenient for the torsion bolt to be better stressed.

[0018] In some embodiments, a second fixing piece and a second fixing bolt are provided at the top of the bolt body. The second fixing piece is pressed on the top of the torsion bolt, and the second fixing bolt presses the second fixing piece tightly on the top of the bolt body. By pressing the top of the torsion bolt tightly by the second fixing piece, the loosening of the torsion bolt due to vibration is further prevented, and the fastening effect is more reliable.

[0019] In some embodiments, a second sealing member is provided on the top of the second fixing piece. The second sealing member includes: a second shield, a third lock washer, a fourth lock washer, a third sealing ring, a fourth sealing ring, a second grease filling port, and a fourth fixing bolt. The fourth fixing bolt passes through the second shield and is connected to the top of the second fixing bolt, pressing the second shield against the top of the second fixing bolt. A third sealing ring is provided between the fourth fixing bolt and the second shield, and a third lock washer is provided between the fourth fixing bolt and the second shield, with the third lock washer pressing on top of the third sealing ring. A fourth lock washer is provided between the second fixing bolt and the second fixing piece. A fourth sealing ring is provided between the outer side of the bottom of the second pressure-bearing gasket and the inner side of the second shield. The second shield and the second pressure-bearing gasket form a sealed space, and at least one second grease filling port is provided on the surface of the second shield, with the second grease filling port communicating with the sealed space; Alternatively, the second sealing member is a second elastic shield that wraps around the outer walls of the second fixing bolt, the bolt body, and the second pressure-bearing gasket. Through the setting of the second sealing member, better sealing protection is provided in a working environment with acidity or alkalinity, preventing the internal components from being corroded.

[0020] According to one aspect of the present invention, a method for using a torque bolt with a top-pushing structure is characterized by including the following steps: S1. Pre-assemble the split top-pushing component. Insert the pressure-bearing column into the second installation hole, engage the torque bolt with the thread in the second installation hole, and at the same time, the pressure-bearing column has free up-and-down movement space in the second installation hole; S2. Connect all the split top-pushing components to the second installation hole according to the steps of S1; S3. Install the second pressure-bearing gasket. Sleeve the second pressure-bearing gasket on the top of the bolt passing through the connected parts. The second pressure-bearing gasket is arranged between the bolt body and the connecting part, and there is a gap between the bolt body and the second pressure-bearing gasket; S4. Apply a pre-tightening force to the torque bolt in sequence according to the installation instruction card. The torque bolt rotates and moves downward while driving the pressure-bearing column to move linearly, and the pressure-bearing column abuts against the second pressure-bearing gasket; S5. Install the lock card. Slightly adjust the angle of the torque bolt and snap the lock card onto the tops of all the torque bolts; S6. Install the circlip. Use a circlip pliers to press the circlip into the installation groove at the top of the torque bolt in sequence; S7. Sleeve the fourth lock washer on the second fixing bolt, place the second fixing piece on the top of the torque bolt, and the second fixing bolt passes through the second fixing piece and is fixedly connected to the threaded hole at the top of the bolt; S8. Install the second sealing member; The step S8 is: directly wrap the second elastic shield around the outer walls of the second fixing bolt, the bolt body, and the second pressure-bearing gasket; Alternatively, the S8 is as follows: successively sleeving the fourth fixing bolt with the third lock washer and the third sealing ring, pressing the fourth sealing ring against the bottom inner wall of the second shield, installing the second shield outside the second fixing bolt, the bolt body and the second pressure-bearing gasket to confirm that the fourth sealing ring is installed in place, threading the fourth fixing bolt through the second shield and thread-connecting it to the top of the second fixing bolt, tightening the fourth fixing bolt while the third lock washer and the third sealing ring are installed in place, and injecting grease through the second grease filling port.

[0021] The present invention has the beneficial effects of simple structure, reliable connection, excellent anti-loosening performance, and prevention of damage to the torque bolt compared with the prior art. By improving the separate push bolt in the prior art into the structure of a torque bolt and a bearing column, the pre-tightening force generated is a pure linear tensile force, thus avoiding the damage caused by harmful twisting or bending during the tightening of ordinary threads; the downward movement distance of the bearing column is limited by the first limiting protrusion and the third limiting protrusion; the anti-loosening card and the snap ring are further used to prevent the torque bolt from loosening and further cause the nut body or the bolt body to loosen; ensuring the length of the torque bolt is convenient for the torque bolt to be better stressed; further preventing the torque bolt from loosening due to vibration by pressing the top of the torque bolt with the second fixing piece, and the fastening effect is more reliable. Through the arrangement of the first sealing member and the second sealing member, better sealing protection is provided in the working environment with acidity or alkalinity, preventing the internal components from being rusted. Brief Description of the Drawings

[0022] Figure 1 is a schematic structural view of the torque nut with a push structure of the present invention; Figure 2 is a cross-sectional view of the torque nut with a push structure of the present invention; Figure 3 is a schematic view of another embodiment of the torque nut with a push structure of the present invention; Figure 4 is a schematic structural view of the first sealing member of the torque nut with a push structure of the present invention; Figure 5 is Figure 4 a partial enlarged view of part A in Figure 6 is Figure 4 a partial enlarged view of part B in Figure 7 is a schematic structural view of another embodiment of the first sealing member of the torque nut with a push structure of the present invention; Figure 8 is a schematic structural view of the torque bolt with a push structure of the present invention; Figure 9 is a cross-sectional view of the torque bolt with a push structure of the present invention; Figure 10It is a schematic structural diagram of the second sealing component of the torsion bolt with a pushing structure according to the present invention; Figure 11 It is Figure 9 a partial enlarged view of part A in Figure 12 It is Figure 9 a partial enlarged view of part B in Figure 13 It is a schematic structural diagram of another embodiment of the second sealing component of the torsion bolt with a pushing structure according to the present invention; Figure 14 It is a schematic structural diagram of the installation instruction card of the installation method in the present invention. Specific embodiments

[0023] The present invention will be described in detail below with reference to the embodiments shown in the drawings. It should be noted that these embodiments are not limitations on the present invention, and any equivalent transformation or substitution in function, method or structure made by those of ordinary skill in the art according to these embodiments shall fall within the protection scope of the present invention.

[0024] In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "coupling" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or the communication inside two components. It can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific situations.

[0025] As Figure 1 and Figure 2 shown, the torsion nut with a pushing structure according to the present invention includes: a nut body 1, a split pushing component 2 and a first bearing gasket 3. A first internal thread 11 is provided inside the nut body 1, and a plurality of first mounting holes 12 are provided on the outer wall of the nut body 1. The axial direction of the first mounting holes 12 is the same as the axial direction of the nut body 1. The split pushing component 2 is installed in the first mounting holes 12 and the bottom of the split pushing component 2 extends out of the first mounting holes 12 to abut against the first bearing gasket 3; The split jacking component 2 includes: a torque bolt 21 and a bearing column 22. The bearing column 22 is arranged in the first mounting hole 12. The torque bolt 21 meshes with the thread in the first mounting hole 12, and the torque bolt 21 squeezes the bearing column 22 towards the first bearing gasket 3. By improving the single jacking bolt in the prior art into the structure of the torque bolt 21 and the bearing column 22, the generated pre-tightening force is a pure linear tensile force, thus avoiding the damage caused by harmful distortion or bending generated by tightening ordinary threads. When there is mechanical vibration, especially when the present invention receives simultaneous axial and radial vibrations, the integral type is very easy to become loose. In this patent application, the frictional force between the split torque bolt 21 and the bearing column 22 is used to offset the axial force, while in the prior art, the integral type directly uses the torque bolt 21 to bear the axial force. Excessive axial force will cause bending, cracking or even fracture, and the thread will fail and slip, resulting in loosening.

[0026] A first limiting protrusion 13 is arranged at the bottom of the first mounting hole 12. The first limiting protrusion 13 limits the bearing column 22 from moving downwards continuously, and a second internal thread 14 is arranged on the inner wall of the first mounting hole 12. The moving distance of the bearing column 22 is limited by the first limiting protrusion 13.

[0027] A second limiting protrusion 23 is arranged at the top of the bearing column 22. The outer diameter of the second limiting protrusion 23 is smaller than the inner diameter of the second internal thread 14, and the outer diameter of the second limiting protrusion 23 is larger than the inner diameter of the first limiting protrusion 13. Such a setting can not only ensure that the bearing column 22 is installed into the first mounting hole 12 but also ensure that the moving position of the bearing column 22 is limited by the first limiting protrusion 13.

[0028] A loosening prevention component 4 is arranged between the torque bolt 21 and the nut body 1; The loosening prevention component 4 includes: a loosening prevention card 41 and a snap ring 42. The loosening prevention card 41 is clamped on the top of the torque bolt 21, and the snap ring 42 limits the loosening prevention card 41 on the top of the torque bolt 21. The loosening prevention card 41 and the snap ring 42 further prevent the torque bolt 21 from loosening and further cause the nut body 1 to loosen.

[0029] The loosening prevention card 41 is provided with a plurality of limiting holes along the circumference. There are a plurality of tooth-shaped protrusions in the limiting holes. The tooth-shaped protrusions engage with the outer hexagon at the top of the torque bolt 21 to prevent the torque bolt 21 from rotating. Further, a groove is formed at the top of the torque bolt 21 for installing the snap ring 42. The snap ring 42 fits on the loosening prevention card 41 to prevent the loosening prevention card 41 from detaching from the torque bolt 21 due to vibration. By limiting the top of the torque bolt 21, it is prevented that the torque bolt 21 rotates upwards and becomes loose due to vibration.

[0030] The axial height of the torque bolt 21 is at least 0.1 times the axial height of the bearing column 22. Ensuring the length of the torque bolt 21 is convenient for the torque bolt 21 to be better stressed.

[0031] Such asFigure 3 As shown, a threaded hole is provided at the center of the shaft engaged with the nut body 1. A first fixing piece 91 is provided at the top of the torque bolt 21. The first fixing piece 91 is pressed against the top of the torque bolt 21. The first fixing piece 91 is connected to the shaft by a first fixing bolt 92 to press the first fixing piece 91 against the top of the bolt body 21. By pressing the top of the torque bolt 21 with the first fixing piece 91, the torque bolt 21 is further prevented from loosening due to vibration, and the fastening effect is more reliable.

[0032] As Figure 4 、 Figure 5 and Figure 6 As shown, a first sealing component 101 is provided at the top of the first fixing piece 91. The first sealing component 101 includes: a first shield 1011, a first lock washer 1012, a second lock washer 1013, a first sealing ring 1014, a second sealing ring 1015, a first grease filling port 1016 and a third fixing bolt 1017. The third fixing bolt 1017 passes through the first shield 1011 and is connected to the top of the first fixing bolt 92 and presses the first shield 1011 against the top of the first fixing bolt 92. A first sealing ring 1014 is provided between the third fixing bolt 1017 and the first shield 1011. A first lock washer 1012 is provided between the third fixing bolt 1017 and the first shield 1011, and the first lock washer 1012 is pressed against the top of the first sealing ring 1014. A second lock washer 1013 is provided between the first fixing bolt 92 and the first fixing piece 91. A second sealing ring 1015 is provided between the outer side of the bottom of the first pressure-bearing gasket 3 and the inner side of the first shield 1011. The first shield 1011 and the first pressure-bearing gasket 3 form a sealed space. At least one first grease filling port 1016 is provided on the surface of the first shield 1011, and the first grease filling port 1016 communicates with the sealed space; essentially, the first sealing ring 1014 between the first shield 1011 and the third fixing bolt 1017 and the second sealing ring 1015 provided between the outer side of the bottom of the first pressure-bearing gasket 3 and the inner side of the first shield 1011 are closed to form a sealed space, and then grease is filled in the sealed space through the first grease filling port 1016 to further prevent the internal components from contacting the outside and prevent rust. The first shield 1011 is made of corrosion-resistant materials such as stainless steel or titanium alloy, so that it can ensure that the internal components do not rust and operate normally even in relatively harsh acidic, alkaline and corrosive environments. The first lock washer 1012 and the second lock washer 1013 adopt male and female lock washers. The first sealing ring 1014 and the second sealing ring 1015 are anti-corrosion and acid-alkali-resistant O-rings. Of course, according to different space conditions, the first grease filling port 1016 can be set at any position on the surface of the first shield 1011.

[0033] The usage method of the torque nut with a top-pushing structure includes the following steps: S1. Pre-install the split push component 2, insert the pressure-bearing column 22 into the first installation hole 12, engage the torque bolt 21 with the thread in the first installation hole 12, and at the same time, the pressure-bearing column 22 has free up-and-down movement space in the first installation hole 12; S2. Connect all the split push components to the first installation hole 12 according to the steps of S1; S3. Install the first pressure-bearing gasket 3, and set the first pressure-bearing gasket 3 on the top of the bolt passing through the connected parts; S4. Screw in the nut body 1, engage the nut body 1 with the thread at the top of the bolt, and there is a gap between the nut body 1 and the first pressure-bearing gasket 3; S5. Apply a pre-tightening force to the torque bolt 21 in sequence according to the preset torque value according to the installation instruction card. The torque bolt 21 rotates and moves downward while driving the pressure-bearing column 22 to move linearly, and the pressure-bearing column 22 abuts against the first pressure-bearing gasket 3; S6. Install the lock washer 41, slightly adjust the angle of the torque bolt 21, and snap the lock washer 41 onto the top of all the torque bolts 21; S7. Install the circlip 42, and use a circlip pliers to press the circlip 42 into the installation groove at the top of the torque bolt 21 in sequence; S8. Set the second lock washer 1013 on the first fixing bolt 92, place the first fixing piece 91 on the top of the torque bolt 21, and the first fixing bolt 92 passes through the first fixing piece 91 and is fixedly connected to the threaded hole at the top of the bolt; S9. Install the first sealing component 101; The S9 is: directly wrap the first elastic shield 1018 around the outer walls of the first fixing bolt 91, the nut body 1 and the first pressure-bearing gasket 3; Or, the S9 is: put the third fixing bolt 1017 on the first lock washer 1012 and the first sealing ring 1014 in sequence, press the second sealing ring 1015 onto the inner wall bottom of the first shield 1011, install the first shield 1011 outside the first fixing bolt 92, the nut body 1 and the first pressure-bearing gasket 3 to confirm that the second sealing ring 1015 is installed in place, the third fixing bolt 1017 passes through the first shield 1011 and is threadedly connected to the top of the first fixing bolt 91, tighten the third fixing bolt 1017 while the first lock washer 1012 and the first sealing ring 1014 are installed in place, and inject grease from the first grease filling port 1016.

[0034] The installation instruction card is preset with schematic holes consistent with the number of torque bolts, and the area around the schematic holes is painted in different colors, such as Figure 14As shown, for example, the equilateral triangle formed by black straight lines is blue, the equilateral triangle formed by red straight lines is orange, and the rest are white. When tightening the torque bolt 21, the installation indicator card is sleeved on the torque bolt 21. First, tighten the torque bolt 21 within the blue mark in an isosceles triangle manner, then tighten the torque bolt 21 within the orange mark in an isosceles triangle manner, and finally tighten the torque bolt 21 within the remaining white marks. Such installation ensures that the nut body 1 and the torque bolt 21 are uniformly and precisely stressed. Similarly, for step S4 in the usage method of the torque bolt with a pushing structure, the torque bolt 21 is installed in the same way.

[0035] As Figure 7 shown, the first sealing component 101 is the first elastic shield 1018 that covers the outer walls of the first fixing bolt 92, the nut body 1, and the first pressure-bearing gasket 3. A first lock washer 1012 is provided between the third fixing bolt 1017 and the first shield 1011. Through the setting of the first sealing component 101, better sealing protection is provided in a working environment with acidity or alkalinity to prevent the internal components from being rusted. The first elastic shield 1018 can be rubber or other elastic materials with anti-corrosion properties. Of course, the overall sealing effect is lower than that of the previous technical solution, and it can be used in an environment where the acidity, alkalinity, and corrosiveness are not too severe.

[0036] As Figure 8 and Figure 9 shown, the torque bolt 21 with a pushing structure according to the present invention includes: a bolt body 5, a split pushing component 2, and a second pressure-bearing gasket 6. An external thread 51 is provided below the bolt body 5, and a plurality of second mounting holes 52 are provided above the bolt body 5. The axial direction of the second mounting holes 52 is the same as the axial direction of the bolt body 5. The split pushing component 2 is installed in the second mounting holes 52 and the bottom of the split pushing component 2 extends out of the second mounting holes 52 to abut against the second pressure-bearing gasket 6; The split pushing component 2 includes: a torque bolt 21 and a bearing column 22. The bearing column 22 is arranged in the second mounting holes 52. The torque bolt 21 is meshed with the internal thread in the second mounting holes 52. The torque bolt 21 squeezes the bearing column 22 towards the direction of the second pressure-bearing gasket 6. By improving the existing single pushing bolt into the structure of the torque bolt 21 and the bearing column 22, the generated pre-tightening force is a pure linear tensile force, thus avoiding the damage caused by harmful twisting or bending generated by tightening ordinary threads.

[0037] A third limiting protrusion 53 is provided at the bottom of the second mounting holes 52. The third limiting protrusion 53 limits the bearing column 22 from moving downward continuously. The inner wall of the second mounting holes 52 is provided with a third internal thread 54. The moving distance of the bearing column 22 is limited by the third limiting protrusion 53.

[0038] A second limiting protrusion 23 is provided at the top of the pressure-bearing column 22. The outer diameter of the second limiting protrusion 23 is smaller than the inner diameter of the third internal thread 54, and the outer diameter of the second limiting protrusion 23 is larger than the inner diameter of the third limiting protrusion 53. Such a setting can not only ensure that the pressure-bearing column 22 is installed into the second installation hole 52 but also ensure that the moving position is limited by the third limiting protrusion 53.

[0039] A loosening prevention component 4 is provided between the torque bolt 21 and the bolt body 5; The loosening prevention component 4 includes: a loosening prevention card 41 and a snap ring 42. The loosening prevention card 41 is clamped on the top of the torque bolt 21, and the snap ring 42 limits the loosening prevention card 41 on the top of the torque bolt 21; The loosening prevention card 41 and the snap ring 42 further prevent the torque bolt 21 from loosening and thus causing the bolt body 5 to loosen.

[0040] The axial height of the torque bolt 21 is at least 0.1 times the axial height of the pressure-bearing column 22. Ensuring the length of the torque bolt 21 facilitates better force application of the torque bolt 21.

[0041] A second fixing piece 7 and a second fixing bolt 8 are provided at the top of the bolt body 5. The second fixing piece 7 is pressed against the top of the torque bolt 21, and the second fixing bolt 8 presses the second fixing piece 7 against the top of the bolt body 5. By pressing the top of the torque bolt 21 with the second fixing piece 7, the torque bolt 21 is further prevented from loosening due to vibration, and the fastening effect is more reliable.

[0042] In the actual use process, there are thousands of specifications for the torque nut with a top-pushing structure or the torque bolt 21 with a top-pushing structure according to different diameters or size specifications. Thus, the number of the split top-pushing components 2 provided has a direct relationship with the diameter of the torque nut with a top-pushing structure or the torque bolt 21 with a top-pushing structure. Simply put, the larger the diameter, the more split top-pushing components 2 need to be provided. Generally, the number of split top-pushing components 2 is not less than 3.

[0043] Since the pressure-bearing column 22 and the pressure-bearing gasket are in contact and bear force, the resulting deformation will be concentrated between the pressure-bearing column 22 and the pressure-bearing gasket. In case of damage, only the corresponding pressure-bearing column 22 and the pressure-bearing gasket need to be replaced, which greatly reduces the use cost.

[0044] Such as Figure 10 、 Figure 11 and Figure 12As shown in the figure, a second sealing component 102 is provided at the top of the second fixing piece 7. The second sealing component 102 includes: a second shield 1021, a third lock washer 1022, a fourth lock washer 1023, a third sealing ring 1024, a fourth sealing ring 1025, a second grease filling port 1026, and a fourth fixing bolt 1027. The fourth fixing bolt 1027 passes through the second shield 1021 and is connected to the top of the second fixing bolt 8, and presses the second shield 1021 against the top of the second fixing bolt 8. A third sealing ring 1024 is provided between the fourth fixing bolt 1027 and the second shield 1021. A third lock washer 1022 is provided between the fourth fixing bolt 1027 and the second shield 1021, and the third lock washer 1022 is pressed against the top of the third sealing ring 1024. A fourth lock washer 1023 is provided between the second fixing bolt 8 and the second fixing piece 7. A fourth sealing ring 1025 is provided between the outer side of the bottom of the second pressure-bearing gasket 6 and the inner side of the second shield 1021. The second shield 1021 and the second pressure-bearing gasket 6 form a sealed space. At least one second grease filling port 1026 is provided on the surface of the second shield 1021, and the second grease filling port 1026 communicates with the sealed space. Substantially, a sealed space is formed by the third sealing ring 1024 between the second shield 1021 and the fourth fixing bolt 1027 and the fourth sealing ring 1025 between the outer side of the bottom of the second pressure-bearing gasket 6 and the inner side of the second shield 1021. Then, grease is filled in the sealed space through the second grease filling port 1026 to further prevent the internal components from contacting the outside and prevent rust. The second shield 1021 is made of a corrosion-resistant material such as stainless steel or titanium alloy, so that the internal components can be ensured not to rust and operate normally even in relatively harsh acidic, alkaline, and corrosive environments. The third lock washer 1022 and the fourth lock washer 1023 are male and female lock washers, and the third sealing ring 1024 and the fourth sealing ring 1025 are anti-corrosion and acid-alkali-resistant O-rings. Of course, according to different space conditions, the second grease filling port 1026 can be set at any position on the surface of the second shield 1021.

[0045] As Figure 13 As shown in the figure, the second sealing component 102 is a second elastic shield 1028 that wraps around the outer walls of the second fixing bolt 8, the bolt body 5, and the second pressure-bearing gasket 6. Through the setting of the second sealing component 102, better sealing protection is provided in a working environment with acidity and alkalinity, preventing the internal components from being rusted. The second elastic shield 1028 can be rubber or other elastic materials with anti-corrosion properties. Of course, the overall sealing effect is lower than that of the previous technical solution, and it can be used in an environment with less severe acidity, alkalinity, and corrosion.

[0046] The usage method of a torque bolt with a top-pushing structure is characterized by including the following steps: S1. Pre-assemble the split push component 2, insert the pressure-bearing column 22 into the second mounting hole 52, engage the torque bolt 21 with the thread in the second mounting hole 52, and at the same time, the pressure-bearing column 22 has free up-and-down movement space in the second mounting hole 52; S2. Connect all the split push components 2 to the second mounting holes 52 according to the steps of S1; S3. Install the second pressure-bearing gasket 6, sleeving the second pressure-bearing gasket 6 on the top of the bolt passing through the connected parts. The second pressure-bearing gasket 6 is arranged between the bolt body 5 and the connected part, and there is a gap between the bolt body 5 and the second pressure-bearing gasket 6; S4. Apply pre-tightening force to the torque bolts 21 in sequence according to the installation instruction card. The torque bolts 21 rotate and move downward while driving the pressure-bearing columns 22 to move linearly, and the pressure-bearing columns 22 abut against the second pressure-bearing gasket 6; S5. Install the lock washer 41, slightly adjust the angle of the torque bolts 21, and snap the lock washer 41 onto the tops of all the torque bolts 21; S6. Install the circlip 42, and use a circlip pliers to press the circlip 42 into the installation groove at the top of the torque bolts 21 in sequence; S7. Sleeve the fourth lock washer 1023 on the second fixing bolt 8, place the second fixing piece 7 on the top of the torque bolt 21, and the second fixing bolt 8 passes through the second fixing piece 7 and is fixedly connected to the threaded hole at the top of the bolt; S8. Install the second sealing component 102; The S8 is: directly wrap the second elastic shield 1028 around the outer walls of the second fixing bolt 8, the bolt body 5 and the second pressure-bearing gasket 6; Or, the S8 is: sleeving the fourth fixing bolt 1027 with the third lock washer 1022 and the third sealing ring 1024 in sequence, pressing the fourth sealing ring 1025 onto the bottom inner wall of the second shield 1021, installing the second shield 1021 outside the second fixing bolt 8, the bolt body 5 and the second pressure-bearing gasket 6 to confirm that the fourth sealing ring 1025 is installed in place, the fourth fixing bolt 1027 passes through the second shield 1021 and is threadedly connected to the top of the second fixing bolt 8, tightening the fourth fixing bolt 1027 while the third lock washer 1022 and the third sealing ring 1024 are installed in place, and injecting grease from the second grease filling port 1026.

[0047] The above are only some embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the creative concept of the present invention, other deformations and improvements can also be made, and these all belong to the protection scope of the present invention.

Claims

1. A torsion nut with a pushing structure, characterized in that Comprising: A nut body, a split push component, and a first pressure-bearing gasket. A first internal thread is provided inside the nut body. A plurality of first mounting holes are provided on the outer wall of the nut body. The axial direction of the first mounting holes is the same as the axial direction of the nut body. The split push component is installed in the first mounting holes and the bottom of the split push component extends out of the first mounting holes to abut against the first pressure-bearing gasket; The split push component includes: a torque bolt and a pressure-bearing column. The pressure-bearing column is arranged in the first mounting hole. The torque bolt is engaged with the thread in the first mounting hole. The torque bolt squeezes the pressure-bearing column towards the direction of the first pressure-bearing gasket.

2. The torque nut with a pushing structure according to claim 1, characterized in that A first limit protrusion is provided at the bottom of the first mounting hole. The first limit protrusion limits the pressure-bearing column from moving further downwards. The inner wall of the first mounting hole is provided with a second internal thread.

3. The torque nut with a pushing structure according to claim 2, characterized in that, A second limit protrusion is provided at the top of the pressure-bearing column. The outer diameter of the second limit protrusion is smaller than the inner diameter of the second internal thread. The outer diameter of the second limit protrusion is larger than the inner diameter of the first limit protrusion.

4. The torsion nut with a pushing structure according to any one of claims 1, 2 or 3, characterized in that A loosening prevention component is provided between the torque bolt and the nut body; The loosening prevention component includes: a loosening prevention card and a snap ring. The loosening prevention card is clamped on the top of the torque bolt. The snap ring limits the loosening prevention card on the top of the torque bolt.

5. The torsion nut with a pushing structure according to any one of claims 1, 2 or 3, characterized in that, The axial height of the torque bolt is at least 0.1 times the axial height of the pressure-bearing column.

6. The torque nut with a pushing structure according to any one of claims 1, 2 or 3, characterized in that A threaded hole is provided at the center of the shaft meshed with the nut body. A first fixing piece is provided at the top of the torque bolt. The first fixing piece is pressed on the top of the torque bolt. The first fixing piece is connected to the shaft through a first fixing bolt to press the first fixing piece tightly on the top of the bolt body.

7. The torsion nut with a pushing structure according to claim 6, characterized in that, A first sealing component is provided at the top of the first fixing piece. The first sealing component includes: a first protective cover, a first loosening prevention gasket, a second loosening prevention gasket, a first sealing ring, a second sealing ring, a first grease filling port, and a third fixing bolt. The third fixing bolt passes through the first protective cover and is connected to the top of the first fixing bolt and presses the first protective cover on the top of the first fixing bolt. A first sealing ring is provided between the third fixing bolt and the first protective cover. A first loosening prevention gasket is provided between the third fixing bolt and the first protective cover, and the first loosening prevention gasket is pressed on the top of the first sealing ring. A second loosening prevention gasket is provided between the first fixing bolt and the first fixing piece. A second sealing ring is provided between the outer side of the bottom of the first pressure-bearing gasket and the inner side of the first protective cover. The first protective cover and the first pressure-bearing gasket form a sealed space. At least one first grease filling port is provided on the surface of the first protective cover. The first grease filling port is communicated with the sealed space; Alternatively, the first sealing component is a first elastic protective cover covering the outer walls of the first fixing bolt, the nut body, and the first pressure-bearing gasket.

8. The method for using a torsion nut with a pushing structure according to claim 7, characterized in that, Including the following steps: S1. Pre-assemble the split push component. Insert the pressure-bearing column into the first mounting hole. Engage the torque bolt with the thread in the first mounting hole. At the same time, the pressure-bearing column has a free up-and-down movement space in the first mounting hole; S2. Connect all the split push components to the first mounting holes according to the steps of S1; S3. Install the first pressure-bearing gasket. Sleeve the first pressure-bearing gasket on the top of the bolt passing through the connected parts; S4. Screw in the nut body so that the nut body engages with the thread at the top of the bolt, and there is a gap between the nut body and the first pressure-bearing gasket; S5. Apply a pre-tightening force to the torque bolts in sequence according to the installation instruction card according to the preset torque value. The torque bolts rotate and move downward while driving the pressure-bearing column to move linearly, and the pressure-bearing column abuts against the first pressure-bearing gasket; S6. Install the anti-loosening card, slightly adjust the angle of the torque bolts, and snap the anti-loosening card onto the tops of all the torque bolts; S7. Install the snap ring, and use a snap ring pliers to press the snap ring into the installation groove at the top of the torque bolts in sequence; S8. Set the second anti-loosening gasket sleeve on the first fixing bolt, place the first fixing piece on the top of the torque bolt, and the first fixing bolt passes through the first fixing piece and is fixedly connected to the threaded hole at the top of the bolt; S9. Install the first sealing component; The step S9 is: directly wrap the first elastic shield around the outer walls of the first fixing bolt, the nut body and the first pressure-bearing gasket; Or, the step S9 is: put the third fixing bolt on the first anti-loosening gasket and the first sealing ring in sequence, press the second sealing ring onto the bottom inner wall of the first shield, install the first shield outside the first fixing bolt, the nut body and the first pressure-bearing gasket to confirm that the second sealing ring is installed in place, the third fixing bolt passes through the first shield and is threadedly connected to the top of the first fixing bolt, tighten the third fixing bolt while the first anti-loosening gasket and the first sealing ring are installed in place, and inject grease from the first grease filling port.

9. The torsion bolt with a pushing structure is characterized in that, Comprising: A bolt body, a split pushing component and a second pressure-bearing gasket. An external thread is provided below the bolt body, and a plurality of second mounting holes are provided above the bolt body. The axial direction of the second mounting holes is the same as the axial direction of the bolt body. The split pushing component is installed in the second mounting holes and the bottom of the split pushing component extends out of the second mounting holes to abut against the second pressure-bearing gasket; The split pushing component includes: a torque bolt and a pressure-bearing column. The pressure-bearing column is arranged in the second mounting hole. The torque bolt engages with the thread in the second mounting hole, and the torque bolt squeezes the pressure-bearing column towards the second pressure-bearing gasket; 10. The torsion bolt with a pushing structure according to claim 9, characterized in that, A third limiting protrusion is provided at the bottom of the second mounting hole, and the third limiting protrusion limits the further downward movement of the pressure-bearing column. The inner wall of the second mounting hole is provided with a third internal thread; 11. The torsion bolt with a pushing structure according to claim 10, characterized in that, A second limiting protrusion is provided at the top of the pressure-bearing column. The outer diameter of the second limiting protrusion is smaller than the inner diameter of the third internal thread, and the outer diameter of the second limiting protrusion is larger than the inner diameter of the third limiting protrusion; 12. The torsion bolt with a pushing structure according to any one of claims 9, 10 or 11, characterized in that An anti-loosening component is arranged between the torque bolt and the bolt body; The anti-loosening component includes: an anti-loosening card and a snap ring. The anti-loosening card is snapped onto the top of the torque bolt, and the snap ring confines the anti-loosening card to the top of the torque bolt; The axial height of the torque bolt is at least 0.1 times the axial height of the pressure-bearing column; 13. The torsion bolt with a pushing structure according to any one of claims 9, 10 or 11, characterized in that, A second fixing piece and a second fixing bolt are provided at the top of the bolt body. The second fixing piece is pressed against the top of the torque bolt, and the second fixing bolt presses the second fixing piece tightly against the top of the bolt body.

14. The torsion bolt with a pushing structure according to claim 13, characterized in that, A second sealing member is provided at the top of the second fixing piece. The second sealing member includes: a second shield, a third lock washer, a fourth lock washer, a third sealing ring, a fourth sealing ring, a second grease filling port, and a fourth fixing bolt. The fourth fixing bolt passes through the second shield and is connected to the top of the second fixing bolt, pressing the second shield against the top of the second fixing bolt. A third sealing ring is provided between the fourth fixing bolt and the second shield. A third lock washer is provided between the fourth fixing bolt and the second shield, and the third lock washer is pressed against the top of the third sealing ring. A fourth lock washer is provided between the second fixing bolt and the second fixing piece. A fourth sealing ring is provided between the outer bottom of the second pressure-bearing gasket and the inner side of the second shield. A sealed space is formed between the second shield and the second pressure-bearing gasket. At least one second grease filling port is provided on the surface of the second shield, and the second grease filling port communicates with the sealed space. Alternatively, the second sealing member is a second elastic shield covering the outer walls of the second fixing bolt, the bolt body, and the second pressure-bearing gasket.

15. The method of using a torsion bolt with a pushing structure according to claim 14, characterized in that, It includes the following steps: S1. Pre-assemble the split push member. Insert the pressure-bearing column into the second mounting hole, engage the torque bolt with the thread in the second mounting hole. At the same time, the pressure-bearing column has free up-and-down movement space in the first mounting hole. S2. Connect all the split push members to the first mounting hole according to the steps of S1. S3. Install the second pressure-bearing gasket. Set the second pressure-bearing gasket on the top of the bolt passing through the connected parts. The second pressure-bearing gasket is arranged between the bolt body and the connecting part, and there is a gap between the bolt body and the second pressure-bearing gasket. S4. Apply pre-tightening force to the torque bolt in sequence according to the installation instruction card. The torque bolt rotates and moves downward, simultaneously driving the pressure-bearing column to move linearly, and the pressure-bearing column abuts against the second pressure-bearing gasket. S5. Install the lock card. Slightly adjust the angle of the torque bolt, and snap the lock card onto the top of all the torque bolts. S6. Install the circlip. Use a circlip pliers to press the circlips into the installation grooves at the top of the torque bolts in sequence. S7. Set the fourth lock washer on the second fixing bolt, place the second fixing piece on the top of the torque bolt, and the second fixing bolt passes through the second fixing piece and is fixedly connected to the threaded hole at the top of the bolt. S8. Install the second sealing member. For S8, it is to directly cover the second elastic shield on the outer walls of the second fixing bolt, the bolt body, and the second pressure-bearing gasket. Alternatively, for S8, put the fourth fixing bolt on the third lock washer and the third sealing ring in sequence, press the fourth sealing ring against the inner bottom of the second shield, install the second shield on the outside of the second fixing bolt, the bolt body, and the second pressure-bearing gasket, confirm that the fourth sealing ring is installed in place, the fourth fixing bolt passes through the second shield and is threadedly connected to the top of the second fixing bolt, tighten the fourth fixing bolt while the third lock washer and the third sealing ring are installed in place, and inject grease from the second grease filling port.

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